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We previously recognized that citext wouldn't get marked as collatable during pg_upgrade from a pre-9.1 installation, and hacked its create-from-unpackaged script to manually perform the necessary catalog adjustments. However, we overlooked the fact that domains over citext, as well as the citext[] array type, need the same adjustments. Extend the script to handle those cases. Also, the documentation suggested that this was only an issue in pg_upgrade scenarios, which is quite wrong; loading any dump containing citext from a pre-9.1 server will also result in the type being wrongly marked. I approached the documentation problem by changing the 9.1.2 release note paragraphs about this issue, which is historically inaccurate. But it seems better than having the information scattered in multiple places, and leaving incorrect info in the 9.1.2 notes would be bad anyway. We'll still need to mention the issue again in the 9.1.4 notes, but perhaps they can just reference 9.1.2 for fix instructions. Per report from Evan Carroll. Back-patch into 9.1.
The PostgreSQL contrib tree
---------------------------
This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly
because they address a limited audience or are too experimental to be
part of the main source tree. This does not preclude their
usefulness.
User documentation for each module appears in the main SGML
documentation.
When building from the source distribution, these modules are not
built automatically, unless you build the "world" target. You can
also build and install them all by running "gmake all" and "gmake
install" in this directory; or to build and install just one selected
module, do the same in that module's subdirectory.
Some directories supply new user-defined functions, operators, or
types. To make use of one of these modules, after you have installed
the code you need to register the new SQL objects in the database
system by executing a CREATE EXTENSION command. In a fresh database,
you can simply do
CREATE EXTENSION module_name;
See the PostgreSQL documentation for more information about this
procedure.